From Moby Games:
The player assumes the role of Andrew McPhile, an American who has just inherited a Scottish castle. His girlfriend has persuaded him to go and claim his inheritance, but he discovers on arrival that the place is haunted by generations of previous MacPhiles.
Clandestiny is a cartoon puzzle game in which the player wanders around a haunted house solving logic puzzles. Each solved puzzle triggers a brief cartoon to extend the story and also opens another room in the house. The gameplay is basically the same as in The 11th Hour, except that there are no transitions between locations.